本例中，只是简单显示了从Twitter中返回的结果数。
In this case, you simply show the number of results returned from Twitter.
LENGTH LENGTH (p. d escription)返回输入值中的字符数。
LENGTH LENGTH (p.description) Returns the number of characters in the input value.
LENGTH LENGTH (p. d escription)返回输入值中的字符数。
LENGTH LENGTH (p.description) Returns the number of characters in the input value.
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